Shock-absokbek



F. PATEE.

SHOCK ABSORBER.

Mmc/mowv msn JUNE 25. 1914.

Patented May 27, 1919.

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FRED PATEE, 0F CHICAGO, ILLINOIS.

srrocK-ABsoaBEa.

. Specification of Letters Patent.

. Patented May 27, reis.

Application led J une 25, 1914. Serial No. 847,200. l

To all whom t may concern:

Be it known that I, FRED PATEE, [a citizen of the United States, residing at Chicago, in the county of Cookand State of Illinois, have invented certain new and useful Improvements in Shock-Absorbers, of which the following is a. specification. n

This invention relates to improvements 1n shock absorbers and has for its object to provide a simple and efficient device adapted to reduce the shocks and vibrations incident to the passage of a vehicle over rough or bumpy ground. It will be obvious that my invention may be applied to a large number of other purposes where a similar effect is to be accomplished. The particular features and advantages of my device ywill be made apparent in the following specification when taken in connection with the drawings, in which- Figure 1 shows a portion of an automobile with my device applied thereto;

Fig. 2 shows a sectional View taken along the line 2-2 of Fig..1 looking in the direction of kthe arrows, a part of my device appearing in plan.

Fig. 3 is a sectional view taken along the line 3-3 of Fig. 2 showing the spring-seat and associated parts with a portion of the spring broken away.

Like numerals refer to like parts and elements in the several figures of the drawings, in which 10 designates a part of the side frame of an automobile supported by the spring 11 which rests on `the spring clip plate 12 and is secured thereto by the spring clips 13. The axle of the automobile on which the spring clip plate 12 and various other parts of the automobile are mounted is designated by the numeral 14. All of these parts are such as may be found in an ordinary automobile and they merely form a basis for showing one adaptation of my invention, which will now be described.

My invention comprises two principal members l5 and 16 pivoted on each other at point 17 thereby forming the pairs of offset lever arms 15a, 15b, 16a and 16". At the pivotal point a lug 18 may be formed on the member 15 adapted to fit in a socket 19 formed on the member 16 and the two parts may be secured together by bolt 20 and a nut 21 thus forming an ordinary sleeve bearing. p

' Extending between the enlarged portions 15c and 16c'of the lever arms 15b and 16", I provide an extensible and compressible spring 22 which is fixed at each end in a spring-seat 23 of cup-like form, as shown in Fig. 3. Each valve seat 23 is secured to the lever arm by which it is carried by means of a boltv 24 having a head 25, which engages the spring-seat, and a threaded portionv 26 engaged by nut 27. The head 25 is aperturedy at'28` to receive a diametrically disposed portion 29 of the spring, whereby each end of the spring is held in fixed relation to its corresponding lever arm. Y

` I preferably also provide an extensible and compressible spring 30 between the enlarged portions 15d and liof the lever arms 15a and 16a, this spring being in all respects similar to, Vand secured in the samev manner as spring 22, above described.

A portion'of 'the side frame 10 carries an angle plate 31 having a horizontally disposed portion 32. Portion 15c1 of the lever arm 15a is apertured toV receive bolts 33 which engage corresponding apertures in thehorizontally kdisposed portion 32. The bolts 33 are engaged byl nuts 34 thus securing thelever arm l5a rigidly to the member 31. The spring clip plate 12 has threaded apertures therein which are engaged by studs 35 passing through corresponding apertures in the portion 16d of the lever arm 16a, thus rigidly securing the lever arm 16a in fixed relation to the axle of the automobile.

rIhe operation of my device is as follows In the passage of the Vautomobile over a rough or bumpy surface, the first tendency of the frame 10 when passing over a bump is to move toward the axle 14. This movement will be resisted by the compression of the two springs 22 and 30 and also by the spring 11. Immediately after such compression takes place the tendency is for the frame 10 to move upwardly away from the axle 14 thereby tending to throw the oecupants of the automobile from their seats. As the frame 10 moves upwardly, however, the lever arms of my device will spread apart thereby putting the springs 22 and 30 in tension and resisting such movement of the automobile frame.

I preferably provide the springs 22 andV 30 under a considerable tension when the frame 10 is in its normal position in relation to the axle 141C` so that the movement of the frame toward the' axle will' not compress the springs 22 and 30, but will allow them to relax to their normal position, themovement of the frame toward'the axle being resisted only by the bile. I do this in order that when the frame 101; begins to, movelavaayv from the: axle, 1:4-, there will be no tendency in the springs 2 and 30 to force the lever arms apart'tliereby increasing the force tendito moveY saidz frame in an upwardly direction.

It is obvious that either one of the springs 22 'and 30 maybe omitted from the struc.- ture," ae change in the number ot springs merely affecting the efficiency ofiny device. I have specifically described my invention as appli-,ed to. an automobile, fulfilling the function of' a shookV absorber,..but, it willfbey apparent' that by changingthelengths oifthe.

" lever'arms andthe proportions. of, the vari;-

ou's other parts, that my device may be applied to a large number of uses where a similar purpose ist'oy be effected, and I do not wish to be limitedI to they particular showing and descriptionbeyond thescopeo the following'clain'1s., lI claiim: Y v

l'. In a device. of, the class described. a lever having one end rigidly secured to the axle of; a. vehicle, a second lever havingone.. end' rigidly secured'g to` the .bod-y otthe vehicleadijacent. .saidI axle, said levers' being, crossed at point between their extremi-v ties, and pivoted atv said, p,oint,0intersection,.

spring 11 of the ant/'omo` normallyfundbrtension, whereby when saidV bodyvmoves toward said axle said springs willbe relaxed while movement of thebody away from said axle will operate to put` said springs under tension. Y Y

2. A shock absorber comprising two levers pivotally connected to each other and arranged to be attached, tothe body and the aXfle o a vehicle. respectively,v and a ,spring extending between said; arms andy connected thereto.,l said spring heir-1gnormally under tension, to. permit said body to move toward said axlewithout compressing said spring.

3. In a device of.- the class described?, av lever armhaving oney end lattached to the axleI of avehicle, a; second, lever armhav-ing;

oney end attached toet-hebody of the vehicle above said; axle, said lever/armsI being pivoted on eachother at a. point of intersection;

intermediate their ends, and. com-pressibleand extensible springs extending between said! lever arms on: each sideV of said; pivotal! point,l said springs being normally under tension', whereby movement ot' the body of" saidV vehicle away from the axle thereof is resisted.- f i In testimony my name.: v l A FRED PA'IEE. IV/itnesses: i

EDYTHE;v M. ANDERSON,

Bonson.;

C 'opies of this patentmay he obtained. for five cents each, by addressing the"(ommi`ssioner of Patents, Washington, D Gf l 

